A) Compute the runoff for a 7-in rainfall on a 1500-acre watershed that has hydrologic soil groups that are 40% group A, 40% group B, and 20% group C interspersed throughout the watershed. The land use is 90% residential area that is 30% impervious, and 10% paved roads with curbs. Assume AMC II conditions. B) What was the runoff for the same watershed and same rainfall before development occurred? The land use prior to development was pasture and range land in poor condition

If a particle moves along a path such that r : (3 sin t) m and ? : 2t rad, where t is in seconds. what is the particle's acceleration in m/s in 4 seconds? a)- 16.43 b)- 16.29 c)- 15.21 d)- 13.79

Asingle-geared blanking press has a stroke of 200 mm and a rated capacity of 320 kn. a cam driven ram is assumed to be capable of delivering the full press load at constant force during the last 15 percent of a constant-velocity stroke. the camshaft has an average speed of 90 rev/min and is geared to the flywheel shaft at a 6: 1 ratio. the total work done is to include an allowance of 16 percent for friction a) estimate the maximum energy fluctuation b) find the rim weight for an effective diameter of 1.2 m and a coefficient of speed fluctuation of 0.10

The characteristic roots of a dynamic system are: 1.7920 1.8160 i, -1.7920 1.8160 i, -0.4160 what is the order of this system? what are the settling time and damping ratio of the system?